Business News Third Pfizer dose can help people with medical history: Doctors DHA to administer third dose of the Pfizer-BioNTech Covid-19 vaccine to residents with compromised immune systems Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related UAE to announce 50 new national projects in September Abu Dhabi: Over 4,000 to benefit from home healthcare services